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气溶沉积会影响树叶的水吸收和水损失

Irmgard Koch¹, Ansgar Kahmen², Jürgen Burkhardt¹

¹Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, Germany.

Tree physiology

|May 5, 2025

概括

环境气溶增强最小表皮电导率 (gmin),并通过胃口为液体水运输创造通道,促进树苗的叶子吸收水 (FWU).

科学领域:

植物生理学植物生理学
大气科学大气科学
环境科学环境科学

背景情况:

叶子上的气溶沉积可以形成水性薄膜,影响植物与大气的相互作用.
这些膜可能使液体水通过胃口运输,称为胃口液压激活 (HAS) 的过程.
叶片吸收水 (FWU) 和增加的最小表皮电导率 (gmin) 是HAS的潜在后果.

研究的目的:

调查环境气溶对FWU和Fagus sylvatica L.幼苗中的gmin的影响.
为了确定气溶是否会影响口腔水运输通路.

主要方法:

苗木在环境或过,无气溶的空气中生长.
使用叶子干燥曲线测量了最小的表皮电导率 (gmin).
叶子吸收水量 (FWU) 通过重力测量和使用新鲜切割和预先干燥的叶子上的丰富水进行了评估.

主要成果:

环境气溶显著增加了gmin约47%.
乳吸收表明,在气溶存在时,对FWU的耐药性降低,尽管重力测量测量没有显著意义.
与预先干燥的叶子相比,新鲜切割的叶子中的吸收率更高.

结论:

结果支持液体水通过气溶诱导的通道进行双向的口腔传输.
气溶似乎增强了口腔泄漏 (gmin) 和FWU.
这些通路的功能意义可能会随着叶子水的潜力而变化.

关键词:

叶子吸收的水分.在 Fwu Fwu Fwu Fwu Fwu 中胃口的液压激活胃口的液压激活最小的表皮导电性这是反向透气的反转.

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